Draft-door-opening device



UNITED STATES ROBERT BARCLAY MOON, OF PHILADELPHIA, PENNSYLVANIA.

DRAFT-DOOR-OPENING DEVICE.

' Specification of Letters Patent.

Patented June 28, 1921.

Application led October 23, 1920. Serial No. 419,081.

To all whom t may concern:

Be it known that I, ROBERT BARGLAY MOON, a citizen of the United States,residing at the city of Philadelphia, county of Philadelphia, and Stateof Pennsylvania, have invented a certain new and useful ImprovedDraft-Door-Opening Device, of which the following is a specification.

The primary object of theV present invention is ,to provide a time-setprime-mover for opening automatically at a predetermined period of timethe draft-door 0f a furnace, boiler or the like, thereby obviating thenecessity of manual attention for the purpose. Another object of thepresent inventionV is to utilize a conventional alarm clock as aprime-mover for positively opening the draft-door of a furnace, boileror the like, the connections employed being such that but slight changeto the alarm windingarbor is the only alteration necessary in the alarmclock. A still further object of the present invention is to provide anovel form of saddle and complemental bracket for supporting theprime-mover in a position in which the vertical axis thereof is out ofperpendicular thereby reducing` to a minimum the possibility of dust anddirt collecting upon the working parts of the prime-mover at the rearthereof.

Other objects of this invention-not at this time more particularlyenumerated will be' Vclearly understood from the detailed de-v scriptionof the invention.

The inventiony consists of the improvements hereinafter described andfinally claimed.

The nature, characteristic features and scope of the invention will bemore vfully understood from the following description taken inconnection with the accompanying drawings forming part hereof, and inwhich:

Figure 1, is a view in front elevation of a furnace equipped with adraft-door opening device embodying features of the invention. v v

Fig. 2, is a view in side elevation of the prime-mover and its supportdetached.

Fig. 3, is a fragmentary view, partly sectioned, illustrating a detailof construction.

Fig. 4, is a rear viewthereof, and

Fig. 5, is a top or plan view of the saddle .shown in Fig. 2.

For the purpose 0f illustrating my invention I have shown in theaccompanying drawings one form thereof which is at present preferred byme, since the same has been found in practice to give satisfactory andreliable results, although it is to be understood that the variousinstrumentalities of which my invention consists can 'be variouslyarranged and organized and that my invention is not limited to theprecise arrangement and organization of the instrumentalities as hereinshown and described.

In the drawings 10designates a furnace, which may be of any desiredtype, provided with a draft-door 11 hinged to be moved in an outwardlyand upwardly direction. 12 designates a prime-mover, for instance analarm-clock of conventional design in which the alarm-arbor 12 isprovided with a winding-key 13. In practice l slightly alter thealarm-clock by adding to the winding-key 18 a dished member lll providedwith apertures 15 and 16. The member 14 is posi- 'tioned in thefollowing manner. I first unscrew the4 winding-key 13 from its arbor12', insert the stern of Asaid key through opening 15 of member le andreplace they winding-key upon the alarm-arbor. The conveXed face of thedished member is presented to, but spaced from, the rear wallof theclock as clearly illustrated in Figs. 2 and 3 for a purpose to presentlyappear.

Thus positioned the linger-piece of the wind-` 'ing-key is containedwithin the recessed portion of said member. Connecting the winding-key13 and a lug 11 on the draft-door 11 is a cable 17 of suitable material.The cable is attached to the winding-key in the following manner. Oneend of the cable is tied to the finger-piece of the winding-key, as at18, and theother end passed through aperture 16 of member 14, the cablebeing then wound in a clock-wise direction for several turns around thewinding-stem as shown in Fig. 3, after which the cable end is secured tothe lug 11 of the draft-door 11. While the clock mayfbe supported in anydesired manner I have devised a novel form of saddle and bracket for,supporting the same.

The clock may be supported by the furnace, as shown in Fig. l, or it maybe supported from rafters overhead or in any other suitable manner. rIhesaddle, which is designated. 19, is shaped and proportioned. not onlyTto etliciently support the clock but to be capable of being packed inthe same box with the clock tor shipping purposes. The saddle comprisesa member formed upon an arc oi" a circle so as to conform to the con.Atour of a clock. The opposite sides of said member each terminate in anear 2O apertured as at 2l. In practice I unscrew the 'feet of the clockand drill the holes 2l. of the saddle so as to register with the holesin the clock from which the feet have been removed, it being understoodthat the clock is seated within the saddle as shown in Fig. 2. I thensecure the clock to place by means or' screws 22. `Extended rearwardlyfrom the saddle-part is an apertured lug 23 which is disposedintermediate said ears. rIlhe saddle is an integral structure. Anangular bracket 2a supports the saddle, the lower arm thereof beingsecured to the lug 23 as by a screw 25 passing through the aperturethereof. The lower arm of the bracket is inclined slightly upwardly sothat the lug 23 of the saddle and said arm are disposed in parallelism,when secured together. The arm and lug are arranged at such an anglethat thev ver tical axis of the clock, as supported in said saddle, isout of perpendicular as clearly shown in F 2. rlhis is so that dust anddirt will have the tendency to be deflected 'from the clock incontradistinction to settling thereon.

The above described parts operate in 'the following manner: Iheattendant in charge or the YFurnace sets the timepiece to 'operate thealarm at the desired time of day and winds the usual time-key and thealarm-key. Then the alarm operates the cable 17 is wound around the stemtbe windingdey between the rear of. the clock and the convened surfaceof the member lll, and draws outwardly and upwardly draft-door ll. Inwinding of the cable the convened surface ot member .1.4: serves toprevent the cable 'from slipping` oil3 the winding key, the said surlacehaving the tendency to deflect the cable as wound toward the rear walloit the clock. @if course when the alarm-key .is re-wound the cableunwinds to permit the draft-door to close.

According to the above construction of parts I am enabled to provide anexceedingly simple, eihcient, reliable and comparatively inexpensivedraft-door opener. The clock, saddle, bracket and cable can be compactlyarranged for transportation and installation of' the parts may bereadily accomplijshed in a few minutes time by unskilled a or.

It will now be apparent that I have devised a novel and use'tulconstruction which embodies the features ot advantage enumerated asdesirable in the statement oit' the invention and the above descriptionand while I have in the present instance shown and described thepreferred embodiment thereot .vhich has been lound in practice to givesatisfactory and reliable results, it is to be understood that the sameis susceptible of modification in various particulars without departingfrom the spirit or scope of the invention or sacrificing any of itsadvantages.

What I claim is:

l. In combination a supporting structure, an angular bracket securedthereto the lower arm of which is disposed at an acute angle to theupper arm of the bracket, a saddle to receive a time-set prime movercarried by said lower arm which saddle is formed upon an are of a circleand so shaped as to provide oppositely disposed ears, the seat of saidsaddle being` arranged in a plane paralleling the plane oit said lowerarm, a timeset prime mover seated within said saddle and resting uponsaid seat and means for securing said time-set prime mover with respectto said ears.

2. In combination a supporting structure, an angular bracket securedthereto the lower arm of which is disposed at an acute angle to theupper arm of the bracket, a saddle to receive a time-set prime movercarried by said lower arm, which saddle comprises an integral memberYformed upon an arc of a circle and provided with an ear upon each sidethereof, the seat of said saddle being arranged in a plane parallelingthe plane of said lower arm, a time-set prime mover seated within thesaddle and resting upon' said seat and means for securing said time-set105 prime mover with respect to said ears so that the vertical axis oitsaid time-set prime mover is out of. perpendicular.

3. A saddle for a time-set pri1ne1nover comprising an integral memberformed upon an are ot a circle and provided with an apertured ear uponeach side thereof and with a downwardly inclined lug` at the rearthereof disposed intermediate said ears and an angular bracket `forsupporting said saddle the lower arm. of which is in a plane parallelingthe plane ot the seat of said saddle.

4l. A. saddle 'for a time-set prime mover comprising` a member formedupon an are of a circle and provided with ears upon each side thereofsaid member' also being provided with an attaching lug and an angularbracket secured to said lug the arms of said bracket being disposed atan acute angle to one another with the seat of the saddle parallelingthe plane of the arm to which said lug is attached.

5. A construction of the character stated comprising a perpendicularlydisposed arm the lower end of which terminates in an out- Wardly andupwardly disposed extension, a of said extension, a time-set'l primemover saddle to receive a time-set prime mover earseated Within saidsaddle and resting upon red by the free end of seid extension said saidseat and means for securing said tme- 10 saddle Comprising a memberformed upon set prime mover With respect to said ears.

un are of e circle and provided upon oppo- In testimony whereof7 I havehereunto site sides Jchereof with an ear the plane of signed my neme.

the seat of said saddle parallelng the plane ROBERT BAROLAY MOON.

